HOMEVULNERABILITIESCVE-2023-40171
HIGH

CVE-2023-40171

CWE-209Published: August 17, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Dispatch is an open source security incident management tool. The server response includes the JWT Secret Key used for signing JWT tokens in error message when the `Dispatch Plugin - Basic Authentication Provider` plugin encounters an error when attempting to decode a JWT token. Any Dispatch users who own their instance and rely on the `Dispatch Plugin - Basic Authentication Provider` plugin for authentication may be impacted, allowing for any account to be taken over within their own instance. This could be done by using the secret to sign attacker crafted JWTs. If you think that you may be impacted, we strongly suggest you to rotate the secret stored in the `DISPATCH_JWT_SECRET` envvar in the `.env` file. This issue has been addressed in commit `b1942a4319` which has been included in the `20230817` release. users are advised to upgrade. There are no known workarounds for this vulnerability.

NVD Source

Technical Analysis

CVE-2023-40171 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

netflix1 product(s)
dispatch
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/Netflix/dispatch/commit/b1942a4319f0de820d86b84a58ebc85398b97c70
PATCHhttps://github.com/Netflix/dispatch/pull/3695
PATCHhttps://github.com/Netflix/dispatch/commit/b1942a4319f0de820d86b84a58ebc85398b97c70
PATCHhttps://github.com/Netflix/dispatch/pull/3695
ADVISORYhttps://github.com/Netflix/dispatch/security/advisories/GHSA-fv3x-67q3-6pg7
ADVISORYhttps://github.com/Netflix/dispatch/security/advisories/GHSA-fv3x-67q3-6pg7

All References (8)

→
https://github.com/Netflix/dispatch/commit/b1942a4319f0de820d86b84a58ebc85398b97c70Patch
→
https://github.com/Netflix/dispatch/pull/3695Patch
→
https://github.com/Netflix/dispatch/releases/tag/latestRelease Notes
→
https://github.com/Netflix/dispatch/security/advisories/GHSA-fv3x-67q3-6pg7Exploit · Third Party Advisory
→
https://github.com/Netflix/dispatch/commit/b1942a4319f0de820d86b84a58ebc85398b97c70Patch
→
https://github.com/Netflix/dispatch/pull/3695Patch
→
https://github.com/Netflix/dispatch/releases/tag/latestRelease Notes
→
https://github.com/Netflix/dispatch/security/advisories/GHSA-fv3x-67q3-6pg7Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2023-40171
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-209
CISA KEVNo
Affected1 vendor(s)
PublishedAug 17, 2023

Related CVEs (CWE-209)

CVE-2023-40757
9.8
CVE-2021-42777
9.8
CVE-2025-31998
9.8
CVE-2018-14925
9.8
CVE-2018-11325
9.8
CVE-2023-40758
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-40171 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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